3. Piping Form from Multi-Kit to Indoor Unit
Outdoor Unit
Outdoor Unit
Multi-Kit
Example: Recommended From each Indoor Unit to Multi-Kit have bending pipes and they will not tend to be deformed.
Bending Pipe
Connection Pipe
Example: Not Recommended
Indoor Unit
Straight piping does not allow for movement of the piping when it expands or contracts.
Copper Piping will expand and contract due
to temperature changes in piping.
Copper Piping will expand and contract due to
temperature changes in piping.
NOTE:
[ Fixing for Liquid Piping, Low Pressure Gas Piping and High/Low Pressure Gas Piping ]
Multi-Kit
Install Horizontally
Due to the properties of copper piping
material, expansion and contraction take place
during seasons of heat and cold. Do not strap gas
refrigerant and piping containing liquids together
as deformation and cracks can result.
NOTE:
When On site piping is installed using
soft or hard copper make sure that the
piping is installed to allow for movement
of the piping. Caused by contraction
and expansion of the piping due to
temperature changes.
High/Low Pressure
Gas Piping
Installing Part for Piping
Liquid Piping
Low Pressure
Gas Piping
4.3 Connection Procedure for Piping Joint
When connecting liquid piping for the unit with a capacity 15 MBH or smaller, and when the length of piping is
49.2ft (15m) or longer, use a piping diameter size of 3/8 inch (9.52mm). Secure the connecting pipe as shown
below. Use the insulation attached to the indoor unit.
Brazing
Insulation Attached to Indoor Unit
Field-Supplied Refrigerant Piping
Field-Supplied Insulation
Fix this part with the attached cord
band or field-supplied vinyl tape.
Insulate this part with the
attached insulation.
Use the flare nut of the indoor unit.
Expander for Liquid Line (Accessory)
Flare the pipe after inserting the flare nut.
Indoor
Unit
6HUYLFH0DQXDO
INSTALLATION
Summary of Contents for YVAHP072B31S
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Page 10: ...viii Service Manual ...
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Page 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
Page 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
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Page 921: ...Service Manual 2 1 OPERATION 2 Operation ...
Page 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
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Page 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Page 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
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Page 1796: ... 2015 Johnson Controls Inc SM 15001 ...